Imam Mahdi (AS) is known as the Savior among Shias, who believe he will reappear on earth as per divine decree, establishing peace and ridding the world of injustice, discrimination, and other instances of evil. Imam Mahdi (PBUH)’s father, Imam Hassan al-Askari, would keep his birth and identity from the tyrants of the time, who had learned about the divine prophecy concerning Imam Mahdi. Their efforts and ill intentions, however, failed to either come in the way of the Imam’s birth or harm him afterward.

Shias thus await the Imam’s reemergence, which is expected to transpire on a Friday, with enthusiasm.

Mid-Shaban has special significance for Muslims throughout the world and is marked by devotion and celebration among Muslims, especially the Shia, as they join the celebrations every year to mark the birth anniversary of Imam Mahdi (PBUH).

Shias around the globe are decorating their houses, mosques, and Shia Islamic Centers, and holding celebrations for the auspicious occasion of the birth anniversary of Imam Mahdi, peace be upon him. Holy shrines in Iraq, Syria, and Iran in addition to mosques, Husseiniyahs, and Islamic centers in Islamic and non-Islamic countries are marking the birth anniversary of Imam Mahdi, peace be upon him.

The event, widely known as Jashn-e Nimeh Sha’ban in Iran, is marked by millions of Shia Muslims around the world, including Iran. Jashn-e Nimeh Sha’ban which is annually being celebrated at Jamkaran Mosque has been registered on the national heritage list.

The world that will be created after the re-appearance of that great Imam (AS), the most prominent characteristic is justice. When you take a look at all the narrations and hadiths that have been recorded regarding that great Imam (AS) and that era, you see that the main focus is not on the people's piety. Of course, people will be pious and religious in that era, but the main focus is on the fact that people will benefit from justice, at that time, and justice and equality will be established.